It can be anything! An apex, subdomain, or even a URL.

Results forwebdisk.capssllc.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-07-29T08:22:43.788	2021-07-29T00:00:00	2022-07-29T23:59:59	capssllc.com	*.capssllc.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-01-03T20:11:07.643	2021-01-03T00:00:00	2021-04-03T23:59:59	capssllc.com	webdisk.capssllc.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2021-01-03T20:11:07.108	2021-01-03T00:00:00	2021-04-03T23:59:59	capssllc.com	webdisk.capssllc.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"